Elevator-door sill.



L. W. DOREN. ELEVATOR DOOR SILL. APPucATm FILED W. 1915.

Patented Aug. '31, 1915.

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LzIEl/VIS W. DOREN, 01? DALLAS, TEXAS, ASSIGNDE F ONE-FOURTH T0 FRANK M. JACKSON, ONE FOUETI-I T0 GILBERT DURAND, AND ONE-FOURTH T0 LOUIS l.

DURAND.

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Specification of Letters Iatent.

Application filed May 7, 1915. Serial No. 26,510.

To all whom it: may concern: I

Be it. known that l, LEWIS W. Donnrrya citizen of the United. States, residing at Dallas, in the county of Dallas and State of Texas, have invented certain new and useful Improvements in Elevator-Door Sills, of which the following is a specification.

lViy-invention has relation to a sill for spanning the spacebetween the floor of the building and the, floor of an elevator when the elevator floor is in open connnnnication and in alinement. with the floor of the building and in such connection it relates more particularly to the arrangement and con-- struction of the sill and of the parts constitilting a means for automatically raising and lowering the sill from and into operative position, said means controlled by the closing and opening of the door leading to the 'elevator shaft, the movement of said door being controlled by the movement of said elevator.

Heretofore in that class of elevators known as freight elevators a source of annoyance, danger and accidental damage has arisen from the fact that the space between the floor at the open doorway and the floor of the elevator was open and if the two tloors were not in approximate alinemegrt, much diiiiculty was experienced in wheeling loaded and empty trucks to or from the elevatorfloor. The wheels of the trucks caught in the unprotected space'even when the two floors were in alinement.

The principal object of my invention is to provide a sill preferably of metal adapted when the elevator doors are 'open, to bridge over the space between the floor and the bottom of the elevator. A second object of my invention is to so connect the door with the sill that when the door is opened the sill may be swung to operative position and when the door is closed the sill may be swung into inoperative position. A third object of my invention is to provide a means for automatically controlling the movement of the sill as the door opens or closes, said means connecting thasill with the walls adjacent to the door openin The nature and scope of invention will be more fully understood from the following description taken in connection with the accompanying drawings forming part' hereof in which,

Figure 1, is a front elevational view of a door opening and a. sill embodying main features of my invention. Fig. 2, is a cross-sectional view of the same and of the elevator, the door and the elevator shaft or well, and Fig. 3,'is a perspective view of a portion of the device with the sill in operative position and the door raised to close the opening to the elevator well.

Referring to the drawings, 1 represents the floor of a building and 2 the end'wall having an opening; 3 leading to the elevator shaft or well 1'. The opening 3 is adapted to be closed by a double door 5, 5, each memher 5 or 5 sliding in a direction the reverse of the direction in which the other member slides. The means for operating these doors is well known in the art and is not shown in the present application. All that is necs sary fort-he properunderstanding of this present invention is to state that upon the up or down movement of the elevator 6 away from the opening 3 the doors 5, 5 move toward each other to close said opening and upon the up and down movement of. the elevator toward the opening 3 the extends over the top of door 5 and con nects floor l with the bottom or floor 90f elevator 6 as clearly shown in Fig. 2. The

sill Sis provided on .its' upper face near either end with an arm 10 pro ect1ng rearwardly away from the elevator-shaft 4 and into opening" 3. The inner free end of each arm 10 is provided with a knob or roller 11 working in a cam slot 12 of a plate 13 fixed to a side 3 of opening-3. The cam slots 12 of plates 13 are so arranged that as the door 5 raises, the arms 10 are turned from a substantially horizontal to a substantially vertical position and the arms 10 swing the sill 8 onits hinges 7, from the horizontal position to an upright position as indicated in dotted lines in Fig. 2 and in full lines in Fig. In this position the two doors 5 and 5 meet and the sillS covers the junction from the inside of the doors. When door 5 descends, the arms 10 are lowered and swing Patented Aug. 31, 1915.

the sill to the horizontal position, the sill in its swing movement also traveling with the door 5.

While in the drawings I have shown a double door closing opening 3 it is manifest that but a single door 5 may be used and the sill 8 being carried by that door and the arms 10 traveling in the slotted plates 13, the sill will rest in horizontal position across the top of door 5 and connect floor l with the floor 9 of the elevator. When in this instance the door'5 is drawn upward the sill 8 will be in an upright position and extend some distance above the top edge of the door. Zesides forming a means where- 'by trucks or heavy packages may be easily loaded on or unloaded from the elevator 0 through opening 3, the sill 8 also serves when in horizontal position to protect the door 5 from jar or shock since it covers or shields the door during the passage of loads to or from the elevator.

Having thus described the nature and objects of my invention, what I claim new and desire to secure by Letters Patent, is,-

1 In a device of the character described, a door closing the entrance to the elevator, a sill pivotally connected to the upper edge of said door and means controlled by the operation of said door whereby when the door is open the sill rests in operative posi tion upon the floor of the elevator.

In a device of the character described, an elevator, a door closing the entrance to the elevator, a means for raising or lowering the door and av sill pivotally connected with the upper edge of said door combined with means controlled by the movement of said door whereby when the door is lowered the sill projects horizontally across the upper edge of said door to rest upon the floor ot' the elevator and the floor of said entrance.

3. In a device of the character described, an elevator, an opening leading thereto, plates provided with cain slots arranged at either side of said opening, a door, a means for raising or lowering the door across said opening, a sill, pivotally supported on the upper edge of said door, and arms carried by said sill, said arms arranged with their free end in operative engagement with the "am slots of said plates.

In. testimony whereof I have signed my name to this specification.

LEWIS l'V. DOREN. 

